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SubjectRe: XFS or Kernel Problem / Bug
Hi!

Sorry that is not possible - cause it is a production machine.

But i've catched the error and the files from another machine - perhaps
this helps.

"BUG: unable to handle kernel NULL pointer dereference at virtual
address 00000288"
" printing eip:"
"c0142ff7"
"*pde = 00000000"
"Oops: 0000 [#1]"
"SMP "
"Modules linked in: iptable_filter ip_tables x_tables"
"CPU: 0"
"EIP: 0060:[<c0142ff7>] Not tainted VLI"
"EFLAGS: 00010246 (2.6.18.6 #1) "
"EIP is at generic_file_buffered_write+0x390/0x6cf"
"eax: 00000000 ebx: 000001ec ecx: ea029a40 edx: 00008002"
"esi: 00000000 edi: e3b28c9c ebp: 000001ec esp: dd04bd18"
"ds: 007b es: 007b ss: 0068"
"Process proftpd (pid: 3615, ti=dd04a000 task=eba88a70 task.ti=dd04a000)"
"Stack: e3b28d44 00000001 00000010 000001fc c036d793 000001fc c14765c0
00000010 "
" 080d404c 000001ec e3b28c9c c03e78c0 e3b28d44 ea029a40 000001fc
00000000 "
" 00000000 000001ec dd04beac 00d420b1 00000000 00000000 dd04bd80
45b1fa67 "
"Call Trace:"
" [<c036d793>] sock_def_readable+0x7f/0x81"
" [<c017a03a>] file_update_time+0xad/0xcb"
" [<c0232015>] xfs_iunlock+0x55/0x9f"
" [<c0262eeb>] xfs_write+0xa74/0xc61"
" [<c036a253>] sock_aio_read+0x95/0x99"
" [<c025d9fb>] xfs_file_aio_write+0x8f/0xa0"
" [<c015fb94>] do_sync_write+0xc9/0x10f"
" [<c0133ad6>] autoremove_wake_function+0x0/0x57"
" [<c015f3d5>] generic_file_llseek+0x95/0xbc"
" [<c015facb>] do_sync_write+0x0/0x10f"
" [<c015fc80>] vfs_write+0xa6/0x179"
" [<c015fe24>] sys_write+0x51/0x80"
" [<c0102d3f>] syscall_call+0x7/0xb"
"Code: 04 89 10 8b 44 24 40 85 c0 0f 85 db 00 00 00 8b 5c 24 24 85 db 0f
88 c3 00 00 00 8b 4c 24 34 8b 51 18 f6 c6 10 75 73 8b 7c 24 28 <8b> 85
9c 00 00 00 f6 40 30 10 75 63 f6 87 48 01 00 00 01 75 5a "
"EIP: [<c0142ff7>] generic_file_buffered_write+0x390/0x6cf SS:ESP
0068:dd04bd18"
Files:
http://server113-han.de-nserver.de/filemap.s
http://server113-han.de-nserver.de/filemap.o

Stefan

Chuck Ebbert schrieb:
> Stefan Priebe - FH wrote:
>> It could be, that the options are now different - cause i my first try
>> was to change the kernel options - if that did not help i switched
>> back to 2.6.16.37.
>>
>> Any idea what i can do?
>>
>> Chuck Ebbert schrieb:
>>> That doesn't match your oops at all. Did you use a different compiler
>>> and/or
>>> different kernel build options?
>>>
>>>
> If you don't know what changed you can try different options until the
> filemap.s
> is the same. You should see
>
> movl 156(%ebp),%eax
> testb 16, 48(%eax)
>
>
> in generic_file_buffered_write. And you need to regenerate filemap.s
> manually
> each time.
>
>
> (Did you test the kernel that you posted these pieces from? If you can
> get it to oops
> the same way, just post that instead.)
>

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